Snatch-block.



CHARLES MARSHALL TALMADGEVAND PETER MARTIN VEIBELL, OF HILLMAN, WASHINGTON.

SNA'lCI-I-BLOCK.

Specification of Letters Patent.

Patented Oct. 13, 1908.

Application filed September 19, 1903. Serial No. 335,334.

To all 'whom 'it may concern: Y l

vBe it known that we, CHARLES MARSHALL TALMADGE, a citizen of the United States, residing at Hillman, in the county `of King, State of IlVashington, and PETER MARTIN VEIBELL, a subject of the King of Denmark, residing at Hillman, in the county of King and State of Washington, have invented newV and useful Improvements in Snatch- Blocks, of which the following is a specification.

- Our invention relates to snatch blocks in which the rope maybe removed only when the strain is 0E the snatch block, thus permitting the hook connected thereto, to swing to a position substantially or about 90 degrees from the position. in which the said hook is maintained. while the block is in use.

The object of our invention is to construct a snatch block that may be expeditiously removed'from a line, and is especially applicable to logging and for similar purposes.

Another .object-is to vconstruct a snatch block of steel having its several parts accessible without a waste of material, thus making our device light and durable.

We accomplish theseobjects by the construction illustrated in the accompanying drawing in which Y Figure 1 is a front elevation of the entirel block, showing the retaining hooks in their locked position. Fig. 2 is a side elevation of Fig. 1. Fig. 3 is a front elevation showing one of the retaining hooks thrown to the posltion permittin the side link to .be thrown open, thus enab 'ng the rope to be removedLfrom that side. Fig. 4 is a perspective view of the retaining hook piece. Fig. 5 is a view of the bolt.VV Fig. 6 is a modiiicationof Fig. 4.

' Similar reference numerals refer to similar parts throughout the several views in the accompanying drawing. y

We have shown a block consisting of two sheaves, 1 and 2, sup orted and journaled by a shoulder bolt 3, w ch is secured to the side straps 4, and cheek plates 5 by means of a nut 6, which'is adapted to fit al threaded portion of the end of the said shoulder bolt 3 and against a shoulder 7 adapted to maintaln the straps 4 and cheek plates-5 in the desired position. We have also shown a center strap 8 and center cheeks 9, which are supported substantially midway thesidecheeks- 5 means of sleeves 10. .The said center straps y Sare adapted to support a retaining hook piece `11, which is provided with a hook 12 or any other suitable means for securing the snatch block to a chain or other fastening. The said hook piece 11 is also provided with retaining hooks as 13 and 14 which are adapted to lock the side links l5 and 16, which are secured to the side straps 4, and which may be swung as shown in Fig. 3 when the hook 12 is turned in the desired direction substantially at or about 90 degrees from its normal position (as'when a strain is applied thereto).

In Fig. 3 we have shown the retaining hook 13 permitting the side link 15 to swing away frornthe said hook 13 and to permit a rope to swing through a space'17. The side straps 4 are preferably bent to form a loop 18 and back upon themselves and riveted to the cheek plates 5 at 19 and 20, at 20 the rivet is preferably provided with sleeves as 10, thus affording a'means of maintaining the center cheeks 9 and straps 8 in a central position,the said center straps 8 are bent at the end nearest the retaining hook piece 11, to form a bifurcated member adapted to support the said retaining hook piece 11, the said bifurcated member is preferably drilled to iit the rounded portion of the said retaining hook piece 11 as at 11, thus journaling the said retaining hook piece 11 so that when the strain is released from the aforesaid hook 12 the said retaining hook piece 1 1 may be swung to a position as shown in Fig. 3, for the purpose heretofore described.

We do ynot wishto be limited to the specific construction illustrated in the accompanying drawings asv we may wish to vary such details as are within the scope of our atent.

The hook 12 may be replace by an eye and is preferably loosely secured to the retaining piece 1 1 thus affording a swivel connection to our device. We may also desire to use a bolt yinstead of a rivet at 20 thus making it possicompanying drawing and herein set forth it will be seen that a rope or cable resting upon the sheaves 1 and 2 may be readily removed when the strain is released therefrom.

Having thus described our invention, what we claim as new and desire to secure by Letters Patent in the United States is,

1. In a snatch block of the nature indicated, a steel frame having for its sides, strap pieces 4 bent to form a loop 1S, and provided with cheek plates 5 in combination with center straps 3 bent to form a bilurcated member yadapted vto journal the retaining hook piece 11, said retaining hook piece 11 being provided with retaining hooks 13 and 14 bent substantially at 90 degrees from the aXis of the said retaining hook piece 11, the said retaining hook 13 being bent substantially at 180 degrees from the said retaining hook 14.

2. In a snatch block of the nature indi,- cated, a steel frame having for its sides, str ap pieces 4 bent to form a loop 18 and provided with cheek plates 5 in combination with center straps S bent to form a bifurcated member adapted to journal the retaining hook piece 11, said retaining hook piece 11 being provided with retaining hooks 13 and 14 bent substantially at degrees from the axis of the said retaining hook piece 11, the said retaining hook 13 being bent substantially at 180 degrees from the said retaining hook 14, sheaves 1 supported on a shoulder bolt 3, substantially as and for the purpose set forth.

3. In a snatch block of the nature indicated, a steel frame having for its sides strap pieces bent to form a loop 18, and provided with cheek plates 5 in combination with center straps 8 bent to form a bifurcated member adapted to journal the retaining hook piece 11, said retaining hook piece 11 being provided with retaining hooks 13 and 14 bent substantially at 90 degrees from the axis of the said retaining hook pieces 11, the said retaining hook 13 being bent substantially at 180 degrees from the said retaining hook 14, sheaves 1 supported on a shoulder bolt 3, means for maintaining the side straps 4 and side cheeks 5 rigidly in a position which will prevent the said side cheeks 5 from impinging the aforesaid sheaves 1 and means for maintaining the center straps 8 and center cheeks 9 in a central position substantially as and for the purpose set l'orth.

4. In a snatch block of the nature indi cated, a biliurcated member adapted to journal a retaining hook piece 11, means for maintaining the said center straps 8 and centercheeks 9 in a central position relative to the side cheeks 5, the said side cheeks 5 and side straps 4, center cheeks 9 and center straps S and shoulder bolt 3 being adapted to jour-nal sheaves 1 and 2 substantially as and for the purpose set forth.

5. In a snatch block oi the nature indicated, a retaining hook piece adapted to be journaled in a bi'lurcated member -iorn'ied by the center straps S and adapted to apply a strain upon the hook 12 to the shoulder bolt 3 and sheaves 1 and 2, means for removine a cable or rope through a space 17 when the y strain is removed from the said hook 12, sul stantially as and for the purpose set lorth.

6. In a snatch block oi the nature indicated, a retaining hook piece adapted to be journaled in a bi'lurcated member formed by the center straps S and adapted to apply a strain upon the hook 12 to the shoulder bolt 3 and sheaves 1, means 4for removing a cable or rope through a space 17 when the strain is removed from the said hook 12, means -lor rotatably mounting said hook 12 in the said retaining hook piece 11 to form a swivel connection to the said snatch block, the said retaining hook piece 11 being adapted. to uniformly apply the strain irom the hook .12 to sheaves 1 and 2 by means of center straps S, side straps 4 and side links 15 and 1G to the aforesaid shoulder bolt 3, substantially as and for the purpose set forth.

7. In a snatch block, a retaining hook piece journaled in a biureated. member formed by bending center strap piece, sheaves supported by said strap piece, means for removing the rope from said sheaves by rotating said hook piece, side straps 5 bent to form a loop to secure links 15 and 16.

S. In a snatch block a retaining hook piece j ournaled in a biturcated member formed by bending center strap piece, sheaves supported by said. strap piece, means for removing the rope from said sheaves by rotating said hook piece, said straps 5 bent to form a loop to secure links 15 and 1G, means for supporting the said side straps and parts connected thereto rigidly and from imping`- ing the sheaves by means of' a shoulder bolt 3 and a rivet and sleeves v10.

9. In a snatch block, retaining hooks journaled in a bi'liuicated member 'termed by bending center strap piece, sheaves supported by said strap piece, means for removing the rope from said sheaves by rotating said hook piece, side straps 5 bent to `l'orm a loop to secure links 15 and 16, means 'l'or looking the said links in the closed position when the snatch block has a strain applied thereto, substantially as and for the purpose set forth.

10. In a snatch block, a bii'ureated member disposed between sheaves, a hook piece journaled therein, side straps (fo-acting with said bifurcated member to support said sheaves, means for removing a rope trom said sheaves by changing the alinement o'lIV the hooked ends oi said hook piece..

11. In a snatch block, a bilureated member disposed between. sheaves, a hook piece journaled therein, side straps eo-aeting with said bifureated member to support said sheaves, means for removing the rope vl'rom said sheaves by changing the alinement o'l the hooked ends of said hook piece, means whereby a rope may be retained on said sheaves by applying stress to said snatch block.

12. In a snatch block, a bolt, sheaves rotatably mounted on said bolt, a center stra side straps, a retaining hook piece swinging y supported by the bifurcated end of said center strap for the purpose set forth, linksV ada ted to engage the hooked ends of said hooi; piece to strengthen said snatchblock and prevent the rope from becoming disengaged from the Vsheaves thereof, means whereby said links may be disengaged by oscillating said hook piece out of the posi- 15 tion which said hook piece occupies when a strain is appliedto said snatch block to facilitate the removal of the ro e therefrom.

In testimony whereof we ave signed our names to this specification in the presence of 20 two subscribing witnesses.

CHARLES MARSHALL TALMADGE.

PETER MARTIN VEIBELL.

Witnesses:

J. F. BOYD, BESSIE HUFFMAN. 

